Electronics Amplifier QUESTIONS AND ANSWERS

Basic Science : Electronics Amplifier QUESTIONS AND ANSWERS :: part1 : 11 to 15

Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :

11.If A1 and A2 are the gains of two amplifiers, the overall gain when these two amplifiers are cascaded is

12.The gain of an RC coupled amplifier at upper cut off frequency is given by

times the mid-frequency gain

a times the mid-frequency gain

times the mid-frequency gain

1/2 times the mid-frequency gain

13.In a RC coupled amplifier, the coupling capacitor

prevents ac component of the output of the first stage from reaching the input of the second stage

prevents dc component of the output of the first stage from reaching the input of the second stage

prevents ac component of the output of the second stage from reaching the input of the first stage

prevents dc component of the output of the second stage from reaching the input of the first stage

14.The voltage gain of an amplifier without feedback is 100. If a negative feedback is introduced with the feedback fraction β = 0.1, then the gain of the feedback amplifier is

10.0

111.1

9.09

9.99

15.A good design of amplifier circuit should possess

high input impedance

high output impedance

low power gain

low voltage gain

More Electronics Amplifier QUESTIONS AND ANSWERS available in next pages